Oligothiophene Derivatives Functionalized with a Diketopyrrolopyrrolo Core for Solution-Processed Field Effect Transistors: Effect of Alkyl Substituents and Thermal Annealing
| Autor: | Arnold B. Tamayo, Ngoc Luu, Mananya Tantiwiwat, Xuan-Dung Dang, Thuc-Quyen Nguyen |
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| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Materials science Annealing (metallurgy) Atomic force microscopy Substituent Field effect Surfaces Coatings and Films Electronic Optical and Magnetic Materials Solution processed Crystallography chemistry.chemical_compound General Energy chemistry Organic chemistry Field-effect transistor Physical and Theoretical Chemistry Order of magnitude Alkyl |
| Zdroj: | The Journal of Physical Chemistry C. 112:17402-17407 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp8068305 |
| Popis: | Two new oligothiophene derivatives bearing a diketopyrrolopyrrole core, 2,5-di-n-hexyl-3,6-bis(5′′-n-hexyl[2,2′;5′,2′′]terthiophen-5-yl)pyrrolo[3,4-c]pyrrole-1,4-dione (DHT6DPPC6) and 2,5-di-n-dodecyl-3,6-bis(5′′-n-hexyl[2,2′;5′,2′′]terthiophen-5-yl)pyrrolo[3,4-c]pyrrole-1,4-dione (DHT6DPPC12), and their use in solution-processed organic field effect transistors are reported. Depending on the type of alkyl substituent and film annealing temperature, the crystal grain sizes and interlayer spacing vary as observed using atomic force microscopy and X-ray diffractometry, respectively. These changes in film morphology and interlayer spacing lead to an order of magnitude difference in the field effect mobilities. The field effect mobilities for annealed DHT6DPPC6 and DHT6DPPC12 films are 0.02 and 0.01 cm2/V s, respectively. |
| Databáze: | OpenAIRE |
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